Central processor unit



FIG. 1 is a front, top and right side perspective view of a central processor unit showing our new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a left side elevational view thereof;

FIG. 4 is a top view thereof;

FIG. 5 is a bottom plan view thereof;

FIG. 6 is a rear elevational view thereof;

FIG. 7 is a right side elevational view of the central processor unit with a paper holder sliding upwardly;

FIG. 8 is a front, top and right side perspective view of a central processor unit showing another embodiment of our new design; and

FIG. 9 is a front elevational view thereof. 

The ornamental design for a central processor unit, as shown and described. 